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1 MALAYSIAN STATISTICS ON MEDICINES 2007 CHAPTER 1 USE OF MEDICINES IN MALAYSIA Lian L.M. 1 , Faridah A.M.Y. 2 , Hazimah H. 1 , Kok L.C. 1 , Sivasampu S. 1 1. Clinical Research Centre, National Institutes of Health, 2. Pharmaceutical Services Division, MOH In this chapter, we report an overview of the national estimates for the use of medicines in Malaysia for year 2007. The most commonly used medicines by therapeutic groups and by specific drugs are tabulated below. More detailed statistics and analysis of medicines utilised are given in other chapters in this report. As in previous years, the National Medicines Use Survey (NMUS) 2007 was limited to “prescription” medicines only; it excluded Over-the-Counter (OTC) medicines and Traditional Medicines. Also, utilisation data presented in this chapter included only drugs that have Defined Daily Doses (DDDs) in the World Health Organisation (WHO) Anatomical Therapeutic Chemical (ATC) classification system, 1 and the estimates are expressed as number of DDDs per 1000 population per day. Hence the discussions in relation to ranking and comparison of usage in this chapter do not include drugs which do not have WHO assigned DDD and are not prescription medicines. However, estimates for utilisation of some medicines which do not have WHO assigned DDDs are presented, in terms of weight of active ingredient/1000 population per day (Antineoplastic drugs) or weight or volume of drug preparations per 1000 population per day (Dermatologicals, Ophthalmologicals and Otologicals), in other chapters where the utilisation of these drugs within their respective groups are discussed. Among the therapeutic groups, drugs used in diabetes (ATC code A10) ranked highest in terms of utilisation in Malaysia for the year 2007 (Table 1.1) as was in 2006 (Table 1.2). An estimate of 3.97% of the Malaysian population was on drugs from this therapeutic group. This correlates well with the national diabetes prevalence of 4.0% in the general population reported in the Third National Health and Morbidity Survey 2006 (NHMS III). 2 The therapeutic groups used for cardiovascular disorders, namely agents acting on the renin-angiotensin system (C09) consumed by 2.67% of the population, beta blocking agents (C07) consumed by 2.62% of the population, calcium channel blockers (C08) consumed by 2.31% of the population, diuretics (C03) consumed by 1.40% of the population and lipid-modifying agents (C10) consumed by 1.39% of the population, were ranked 2 nd , 3 rd ,4 th , 5 th and 6 th respectively (Table 1.1). Drugs for obstructive airway diseases constituted the next highest ranking group of drugs. However, there was not much difference in total utilisation between 2007 (12.59 DDD/1000 population/day) and 2006 (11.73 DDD/1000 population/day). As far as individual drugs were concerned, ranks 1 to 11 by utilisation for 2007 went to drugs for diabetes and cardiovascular disorders (Table 1.3), again reflecting the pattern for prevalence of chronic diseases reported by NHMS III where hypertension, diabetes and heart diseases ranked 1 st , 2 nd and 4 th among the top chronic illnesses. Overall, there was not much difference in ranking for the top 5 drugs by utilisation when compared to 2006. Metformin (consumed by 1.43% of the population), followed by glibenclamide (consumed by 1.28% of the population), were the top 2 antidiabetic drugs as well as the top 2 among all drugs utilised. Metformin was recommended as first-line therapy in the treatment of Type 2 diabetes mellitus according to the Malaysian Clinical Practice Guidelines (CPG) at that time. 3 This may reflect some improvement in terms of adherence to the guidelines compared to 2006 where usage of glibenclamide superseded metformin. It is interesting to note that usage of amlodipine had gone up from rank 9 th in 2006 to rank 6 th in 2007, with almost 70% increase in utilisation. Usage in the public sector in 2007 was double that of 2006. Perindopril had also climbed up the chart from being only at rank 11 th in 2006 to rank 7 th in 2007, again with almost 70% increase in usage. The increase in utilisation of amlodipine and perindopril may possibly be attributed to the findings of the Anglo Scandinavian Cardiovascular Outcome Trial (ASCOT), which was published in 2005. 4 Also, generic versions of amlodipine became available following expiration of its patent.

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1

MALAYSIAN STATISTICS ON MEDICINES 2007

CHAPTER 1 USE OF MEDICINES IN MALAYSIALian L.M.1, Faridah A.M.Y.2, Hazimah H.1, Kok L.C.1, Sivasampu S.1

1. Clinical Research Centre, National Institutes of Health, 2. Pharmaceutical Services Division, MOH

In this chapter, we report an overview of the national estimates for the use of medicines in Malaysia for year 2007. The most commonly used

medicines by therapeutic groups and by specific drugs are tabulated below. More detailed statistics and analysis of medicines utilised are given

in other chapters in this report.

As in previous years, the National Medicines Use Survey (NMUS) 2007 was limited to “prescription” medicines only; it excluded Over-the-Counter

(OTC) medicines and Traditional Medicines. Also, utilisation data presented in this chapter included only drugs that have Defined Daily Doses

(DDDs) in the World Health Organisation (WHO) Anatomical Therapeutic Chemical (ATC) classification system,1 and the estimates are expressed as

number of DDDs per 1000 population per day. Hence the discussions in relation to ranking and comparison of usage in this chapter do not include

drugs which do not have WHO assigned DDD and are not prescription medicines.

However, estimates for utilisation of some medicines which do not have WHO assigned DDDs are presented, in terms of weight of active

ingredient/1000 population per day (Antineoplastic drugs) or weight or volume of drug preparations per 1000 population per day (Dermatologicals,

Ophthalmologicals and Otologicals), in other chapters where the utilisation of these drugs within their respective groups are discussed.

Among the therapeutic groups, drugs used in diabetes (ATC code A10) ranked highest in terms of utilisation in Malaysia for the year 2007 (Table

1.1) as was in 2006 (Table 1.2). An estimate of 3.97% of the Malaysian population was on drugs from this therapeutic group. This correlates well

with the national diabetes prevalence of 4.0% in the general population reported in the Third National Health and Morbidity Survey 2006 (NHMS

III).2

The therapeutic groups used for cardiovascular disorders, namely agents acting on the renin-angiotensin system (C09) consumed by 2.67% of

the population, beta blocking agents (C07) consumed by 2.62% of the population, calcium channel blockers (C08) consumed by 2.31% of the

population, diuretics (C03) consumed by 1.40% of the population and lipid-modifying agents (C10) consumed by 1.39% of the population, were

ranked 2nd, 3rd,4th, 5th and 6th respectively (Table 1.1).

Drugs for obstructive airway diseases constituted the next highest ranking group of drugs. However, there was not much difference in total

utilisation between 2007 (12.59 DDD/1000 population/day) and 2006 (11.73 DDD/1000 population/day).

As far as individual drugs were concerned, ranks 1 to 11 by utilisation for 2007 went to drugs for diabetes and cardiovascular disorders (Table

1.3), again reflecting the pattern for prevalence of chronic diseases reported by NHMS III where hypertension, diabetes and heart diseases ranked

1st, 2nd and 4th among the top chronic illnesses. Overall, there was not much difference in ranking for the top 5 drugs by utilisation when compared

to 2006.

Metformin (consumed by 1.43% of the population), followed by glibenclamide (consumed by 1.28% of the population), were the top 2 antidiabetic

drugs as well as the top 2 among all drugs utilised. Metformin was recommended as first-line therapy in the treatment of Type 2 diabetes mellitus

according to the Malaysian Clinical Practice Guidelines (CPG) at that time.3 This may reflect some improvement in terms of adherence to the

guidelines compared to 2006 where usage of glibenclamide superseded metformin.

It is interesting to note that usage of amlodipine had gone up from rank 9th in 2006 to rank 6th in 2007, with almost 70% increase in utilisation.

Usage in the public sector in 2007 was double that of 2006. Perindopril had also climbed up the chart from being only at rank 11th in 2006 to

rank 7th in 2007, again with almost 70% increase in usage. The increase in utilisation of amlodipine and perindopril may possibly be attributed to

the findings of the Anglo Scandinavian Cardiovascular Outcome Trial (ASCOT), which was published in 2005.4 Also, generic versions of amlodipine

became available following expiration of its patent.

2

MALAYSIAN STATISTICS ON MEDICINES 2007

3

Asthma was the 3rd highest ranking chronic disease reported in NHMS III. It is therefore not surprising that inhaled salbutamol (R03A) occupied

12th position in the 2007 utilisation ranking for individual drugs, an improvement from its 13th position in 2006, with approximately 30% increase

in usage. Usage of budesonide, an inhalation steroid, however, dropped from rank 25th in 2006 (1.787 DDD/1000 population/day) to rank 38th

(1.1984 DDD/1000 population/day) in 2007. Although detail statistics in other parts of this report showed general decrease in use of single-

ingredient inhaled glucocorticoids, there was an overall increase in use of inhaled combination glucocorticoids with long-acting beta agonists.

It is also interesting to note the improvement in rankings of oral contraceptives. The combination levonorgestrel and oestrogen which ranked 31st

in 2006 moved up to 21st in 2007, whilst the desogestrel and oestrogen combination, a third generation oral contraceptive, emerged as a new

member in the top 40 drugs by utilisation list at rank 39th (2007), moving up from 49th in the previous year. In terms of utilisation, there were overall

increase of 1.12 DDD/1000 population/day and 0.28 DDD/1000 population/day, respectively, for the 2 combination oral contraceptives (equivalent

to an increase of 75% and 30%, respectively).

Comparing the Malaysian drug utilisation pattern with that of Australia5 and Norway6, whilst cardiovascular drugs dominated the top 10 drugs by

utilisation in all 3 countries, ranking for individual drugs for Malaysia differed somewhat from that of Australia and Norway as shown in Table 1.6.

The most significant differences are the presence of nervous system drugs in the top 10 drugs for Australia (sertraline (N06AB06) ranked 7th) and

Norway (zopiclone, (N05CF01) ranked 4th); both these drugs are not even in the top 40 drugs in Malaysian ranking. Metformin, the most highly

utilised drug in Malaysia did not feature among the top 10 drugs for both Australia and Norway although the consumptions were comparable -

14.28, 15.65, 11.98/1000 population/day, respectively, for Malaysia, Australia and Norway; in fact, neither did any of the other antidiabetic drugs

make it to the top 10 list for Australia and Norway. Diabetes prevalence in Australia was 3.6% (2005-2006)7 and Norway 4.7% (2007).8 Instead,

the lipid-modifying drugs, atorvastatin and simvastatin topped the Australian and Norwegian list, respectively.

The National Medicines Use Survey (NMUS), amongst other objectives, is designed to support the implementation of the National Medicines Policy

which promotes equitable access to essential medicines. Hence, it is pertinent to note that 10 out of the top 40 drugs used in 2007 are not in

the Malaysian National Essential Drugs List (NEDL) 2008.9 These included amlodipine, an antihypertensive drug (rank 6th), loratadine, a commonly

used non-sedative antihistamine (rank 24th), cetirizine (another antihistamine) which saw a 51% increase in usage and improved ranking from 32nd

(2006) to 25th (2007), and simvastatin (a lipid-modifying drug) which has been consistently in the top 40 drugs used (rank 17th in 2006 and 16th

in 2007). Based on the utilisation patterns established by NMUS, there is an apparent ‘mismatch’ between what is most used and what is listed

in the NEDL in some therapeutic areas. Whilst the NEDL serves only as a guide to drugs which should be available in the country, there is need to

regularly update the medicines selections to reflect new therapeutic options and changing therapeutic needs.

The NMUS showed that the drug utilisation patterns in Malaysia concurred with prevalence of chronic diseases reported in NHMS III. It also showed

that for both 2006 and 2007, the overall drug utilisation in the public sector was twice that of the private sector for the top 30 therapeutic groups.

Twenty of the thirty most utilised classes of drugs were for chronic diseases, and public sector utilisation exceeded that of private sector, indicating

an imbalance in burden borne in the management of these diseases. This also concurred with the NHMS III which found that government health

centres were the most frequently visited by respondents with chronic diseases followed by private clinics.

However, the pattern was reversed for drugs used for short term symptomatic relief such as antihistamines, anti-inflammatory and antirheumatic

drugs, nasal preparations, drugs for gastrointestinal disorders and corticosteroids, where private sector utilisation was higher. Interestingly, the

NHMS III found that among those who used ambulatory services for recent illnesses, 62.1% went to private clinics whilst 37.9% used government

clinics.10

In conclusion, the overall utilisation pattern of medicines in the country for 2006-2007 appeared to be in accordance with the general healthcare

needs.

CHAPTER 1 | USE OF MEDICINES IN MALAYSIA

2 3

MALAYSIAN STATISTICS ON MEDICINES 2007

Table 1.1 : Top 30 Therapeutic Groups by Utilisation in DDD/1000 population/day 2007

Rank ATC Therapeutic Group Public Private Total

1 A10 Drugs used in diabetes 32.1800 7.5439 39.7240

2 C09 Agents acting on the renin-angiotensin system 19.0851 7.5894 26.6745

3 C07 Beta blocking agents 21.5089 4.7520 26.2609

4 C08 Calcium channel blockers 18.9637 4.0964 23.0601

5 C03 Diuretics 11.0801 2.9467 14.0268

6 C10 Lipid modifying agents 8.9122 5.0597 13.9719

7 R03 Drugs for obstructive airway diseases 9.8508 2.7419 12.5928

8 M01 Anti-inflammatory and antirheumatic products 4.1473 8.1637 12.3110

9 R06 Antihistamines for systemic use 4.5773 6.7152 11.2925

10 B01 Antithrombotic agents 6.4576 3.3091 9.7666

11 J01 Antibacterials for systemic use 3.6481 6.0014 9.6494

12 G03 Sex hormones and modulators of the genital system 3.1479 4.9869 8.1348

13 A02 Drugs for acid related disorders 3.1153 3.2156 6.3309

14 C01 Cardiac therapy 3.3976 1.5625 4.9601

15 N05 Psycholeptics 3.4242 1.4548 4.8790

16 H02 Corticosteroids for systemic use 1.9316 2.8135 4.7451

17 R01 Nasal preparations 1.3867 2.9747 4.3614

18 C02 Antihypertensives 3.1665 0.1879 3.3544

19 A03 Drugs for functional gastrointestinal disorders 0.7107 1.4018 2.1125

20 H03 Thyroid therapy 1.4830 0.5282 2.0112

21 N06 Psychoanaleptics 1.2457 0.5596 1.8053

22 M04 Antigout preparations 1.1464 0.6272 1.7736

23 N03 Antiepileptics 1.3751 0.2618 1.6368

24 S01 Ophthalmologicals 1.1529 0.2151 1.3680

25 N07 Other nervous system drugs 0.5723 0.5439 1.1162

26 G04 Urologicals 0.7826 0.2974 1.0800

27 J04 Antimycobacterials 0.8298 0.1292 0.9590

28 N04 Antiparkinson drugs 0.7405 0.0689 0.8094

29 A07 Antidiarrheals, intestinal anti-inflammatory /anti-infective agents 0.2738 0.4677 0.7416

30 J05 Antivirals for systemic use 0.5660 0.0698 0.6358

Total utilisation for top 30 therapeutic groups 170.8597 81.2859 252.1456

CHAPTER 1 | USE OF MEDICINES IN MALAYSIA

4

MALAYSIAN STATISTICS ON MEDICINES 2007

5

Table 1.2 : Top 30 Therapeutic Groups by Utilisation in DDD/1000 population/day 2006

Rank ATC Therapeutic Group Public Private Total

1 A10 Drugs used in diabetes 32.7987 6.5362 39.3349

2 C07 Beta blocking agents 21.3322 4.3809 25.7131

3 C09 Agents acting on the renin-angiotensin system 13.8276 5.7525 19.5801

4 C08 Calcium channel blockers 15.9410 3.4243 19.3653

5 C03 Diuretics 11.7771 2.8941 14.6712

6 R03 Drugs for obstructive airway diseases 9.4693 2.2664 11.7356

7 C10 Lipid modifying agents 5.5117 4.9109 10.4226

8 M01 Anti-inflammatory and antirheumatic products 3.9514 6.0216 9.9729

9 R06 Antihistamines for systemic use 4.4889 5.4258 9.9147

10 B01 Antithrombotic agents 6.0229 3.5854 9.6084

11 J01 Antibacterials for systemic use 3.8151 5.1231 8.9383

12 G03 Sex hormones and modulators of the genital system 2.4879 3.8736 6.3615

13 A02 Drugs for acid related disorders 2.5007 2.6584 5.1590

14 C01 Cardiac therapy 2.7982 1.8947 4.6928

15 H02 Corticosteroids for systemic use 1.9061 2.5400 4.4461

16 N05 Psycholeptics 3.0499 0.9971 4.0470

17 C02 Antihypertensives 2.9987 0.2328 3.2315

18 R01 Nasal preparations 1.1736 1.9592 3.1327

19 A03 Drugs for functional gastrointestinal disorders 0.6813 1.6295 2.3107

20 H03 Thyroid therapy 1.4491 0.5443 1.9934

21 M04 Antigout preparations 1.0294 0.5053 1.5347

22 N03 Antiepileptics 1.3455 0.1569 1.5024

23 N06 Psychoanaleptics 0.8927 0.4193 1.3120

24 S01 Ophthalmologicals 1.0590 0.1936 1.2525

25 J04 Antimycobacterials 0.9993 0.1023 1.1015

26 N07 Other nervous system drugs 0.4346 0.6062 1.0408

27 N04 Antiparkinson drugs 0.8279 0.0524 0.8803

28 G04 Urologicals 0.4062 0.3194 0.7256

29 A08 Antiobesity preparations, excl. diet products 0.0162 0.7057 0.7218

30 R05 Cough and cold preparations 0.0040 0.6973 0.7013

Total utilisation for top 30 therapeutic groups 155.2621 70.1247 225.3862

CHAPTER 1 | USE OF MEDICINES IN MALAYSIA

4 5

MALAYSIAN STATISTICS ON MEDICINES 2007

Table 1.3 : Top 40 Drugs by Utilisation in DDD/1000 population/day 2007

Rank ATC Drug Public Private Total

1 A10B A02 Metformin 11.9242 2.3571 14.2813

2 A10B B01 Glibenclamide 11.0430 1.7243 12.7674

3 C07A B03 Atenolol 9.4592 3.2072 12.6665

4 C07A B02 Metoprolol 11.4304 0.6546 12.0850

5 C08C A05 Nifedipine 10.6460 0.8164 11.4624

6 C08C A01 Amlodipine 6.4459 2.4894 8.9352

7 C09A A04 Perindopril 6.9654 1.0012 7.9666

8 A10B B09 Gliclazide 5.6189 1.5451 7.1640

9 B01A C06 Acetylsalicylic acid 4.7791 2.1267 6.9059

10 C09A A02 Enalapril 4.7359 1.3831 6.1190

11 C03A A04 Chlorothiazide 5.7074 0.0463 5.7537

12 R03A C02 Salbutamol 4.9464 0.7211 5.6675

13 C10A A02 Lovastatin 4.5976 0.2975 4.8952

14 C03C A01 Furosemide 3.9743 0.7494 4.7237

15 C09A A01 Captopril 4.4033 0.1485 4.5518

16 C10A A01 Simvastatin 2.4809 2.0083 4.4892

17 R06A B04 Chlorphenamine 2.6324 1.4110 4.0434

18 M01A B05 Diclofenac 1.1058 2.9248 4.0306

19 M01A G01 Mefenamic acid 1.4147 2.0612 3.4759

20 H02A B06 Prednisolone 1.1353 2.2221 3.3575

21 G03A A07 Levonorgestrel and oestrogen 1.3678 1.2585 2.6263

22 J01C A04 Amoxicillin 0.7373 1.7944 2.5317

23 C02C A01 Prazosin 2.2924 0.0682 2.3606

24 R06A X13 Loratadine 0.8946 1.4514 2.3460

25 R06A E07 Cetirizine 0.3330 1.9108 2.2438

26 R01B A52 Pseudoephedrine, combinations 0.4270 1.8116 2.2387

27 C10A A05 Atorvastatin 0.8415 1.2801 2.1216

28 C08C A02 Felodipine 1.5870 0.4541 2.0411

29 C01E B15 Trimetazidine 1.1144 0.7084 1.8229

30 A02B A02 Ranitidine 1.1472 0.6463 1.7936

31 A02B C01 Omeprazole 0.8518 0.9395 1.7913

32 R03D A04 Theophylline 1.0632 0.4774 1.5407

33 M04A A01 Allopurinol 1.0825 0.4317 1.5142

34 A10A D01 Insulins and analogues, intermediate-acting combined with fast-acting (human) 1.2479 0.1608 1.4087

35 C01D A08 Isosorbide dinitrate 1.2206 0.0991 1.3197

36 C03E A01 Hydrochlorothiazide and potassium-sparing agents 0.8510 0.4501 1.3011

37 C09C A01 Losartan 0.6054 0.6540 1.2595

38 R03B A02 Budesonide 1.0263 0.1722 1.1984

39 G03A A09 Desogestrel and oestrogen 0.4085 0.7718 1.1802

40 R03C C02 Salbutamol 0.6723 0.5031 1.1754

CHAPTER 1 | USE OF MEDICINES IN MALAYSIA

6

MALAYSIAN STATISTICS ON MEDICINES 2007

7

Table 1.4 : Top 40 Drugs by Utilisation in DDD/1000 population/day 2006

Rank ATC Drug Public Private Total

1 A10B B01 Glibenclamide 14.0329 1.5098 15.5427

2 A10B A02 Metformin 11.1397 2.0101 13.1498

3 C07A B02 Metoprolol 11.7536 0.5828 12.3365

4 C07A B03 Atenolol 9.0770 2.9306 12.0076

5 C08C A05 Nifedipine 10.9355 0.6772 11.6127

6 B01A C06 Acetylsalicylic acid 4.8340 2.2369 7.0709

7 C03A A04 Chlorothiazide 6.2441 0.0355 6.2796

8 A10B B09 Gliclazide 4.5930 1.3667 5.9598

9 C08C A01 Amlodipine 3.2803 1.9921 5.2725

10 C03C A01 Furosemide 3.9322 0.9624 4.8946

11 C09A A04 Perindopril 4.3301 0.3796 4.7098

12 C09A A02 Enalapril 3.5113 0.9827 4.4939

13 R03A C02 Salbutamol 4.0240 0.3231 4.3471

14 C09A A01 Captopril 4.1067 0.1984 4.3051

15 M01A B05 Diclofenac 1.4652 2.1251 3.5902

16 R06A B04 Chlorphenamine 2.5648 0.9970 3.5618

17 C10A A01 Simvastatin 1.3189 1.9644 3.2833

18 C10A A02 Lovastatin 2.7005 0.3364 3.0369

19 M01A G01 Mefenamic acid 1.2609 1.4223 2.6833

20 H02A B06 Prednisolone 1.1766 1.3429 2.5194

21 C02C A01 Prazosin 2.2340 0.0961 2.3301

22 R06A X13 Loratadine 0.7417 1.4358 2.1775

23 J01C A04 Amoxicillin 0.6980 1.4019 2.0999

24 C08C A02 Felodipine 1.3805 0.4422 1.8227

25 R03B A02 Budesonide 1.5698 0.2171 1.7870

26 A02B A02 Ranitidine 1.1741 0.5389 1.7130

27 C10A A05 Atorvastatin 0.3930 1.2690 1.6620

28 R03D A04 Theophylline 1.1004 0.4886 1.5890

29 R01B A52 Pseudoephedrine, combinations 0.4124 1.1180 1.5304

30 A02B C01 Omeprazole 0.5889 0.9104 1.4994

31 G03A A07 Levonorgestrel and oestrogen 0.8155 0.6838 1.4993

32 R06A E07 Cetirizine 0.2259 1.2548 1.4807

33 C01E B15 Trimetazidine 0.6345 0.8040 1.4386

34 C01D A08 Isosorbide dinitrate 1.2768 0.0932 1.3699

35 C03E A01 Hydrochlorothiazide and potassium-sparing agents 1.0077 0.3358 1.3434

36 A10A D01Insulins and analogues, intermediate-acting combined with fast-acting (human)

1.1299 0.1982 1.3281

37 M04A A01 Allopurinol 0.9627 0.3601 1.3227

38 R06A D02 Promethazine 0.8526 0.2776 1.1302

39 C09C A01 Losartan 0.5202 0.5978 1.1179

40 C03A A03 Hydrochlorothiazide 0.2597 0.8356 1.0953

CHAPTER 1 | USE OF MEDICINES IN MALAYSIA

6 7

MALAYSIAN STATISTICS ON MEDICINES 2007

Table 1.5 : Top 40 Drugs by Utilisation in DDD/1000 population/day 2007 versus 2006

Rank 2007

ATC Drug2007 2006 Rank

2006Public Private Total Public Private Total

1 A10B A02 Metformin 11.9242 2.3571 14.2813 11.1397 2.0101 13.1498 2

2 A10B B01 Glibenclamide 11.0430 1.7243 12.7674 14.0329 1.5098 15.5427 1

3 C07A B03 Atenolol 9.4592 3.2072 12.6665 9.0770 2.9306 12.0076 4

4 C07A B02 Metoprolol 11.4304 0.6546 12.0850 11.7536 0.5828 12.3365 3

5 C08C A05 Nifedipine 10.6460 0.8164 11.4624 10.9355 0.6772 11.6127 5

6 C08C A01 Amlodipine 6.4459 2.4894 8.9352 3.2803 1.9921 5.2725 9

7 C09A A04 Perindopril 6.9654 1.0012 7.9666 4.3301 0.3796 4.7098 11

8 A10B B09 Gliclazide 5.6189 1.5451 7.1640 4.5930 1.3667 5.9598 8

9 B01A C06 Acetylsalicylic acid 4.7791 2.1267 6.9059 4.8340 2.2369 7.0709 6

10 C09A A02 Enalapril 4.7359 1.3831 6.1190 3.5113 0.9827 4.4939 12

11 C03A A04 Chlorothiazide 5.7074 0.0463 5.7537 6.2441 0.0355 6.2796 7

12 R03A C02 Salbutamol 4.9464 0.7211 5.6675 4.0240 0.3231 4.3471 13

13 C10A A02 Lovastatin 4.5976 0.2975 4.8952 2.7005 0.3364 3.0369 18

14 C03C A01 Furosemide 3.9743 0.7494 4.7237 3.9322 0.9624 4.8946 10

15 C09A A01 Captopril 4.4033 0.1485 4.5518 4.1067 0.1984 4.3051 14

16 C10A A01 Simvastatin 2.4809 2.0083 4.4892 1.3189 1.9644 3.2833 17

17 R06A B04 Chlorphenamine 2.6324 1.4110 4.0434 2.5648 0.9970 3.5618 16

18 M01A B05 Diclofenac 1.1058 2.9248 4.0306 1.4652 2.1251 3.5902 15

19 M01A G01 Mefenamic acid 1.4147 2.0612 3.4759 1.2609 1.4223 2.6833 19

20 H02A B06 Prednisolone 1.1353 2.2221 3.3575 1.1766 1.3429 2.5194 20

21 G03A A07 Levonorgestrel and oestrogen 1.3678 1.2585 2.6263 0.8155 0.6838 1.4993 31

22 J01C A04 Amoxicillin 0.7373 1.7944 2.5317 0.6980 1.4019 2.0999 23

23 C02C A01 Prazosin 2.2924 0.0682 2.3606 2.2340 0.0961 2.3301 21

24 R06A X13 Loratadine 0.8946 1.4514 2.3460 0.7417 1.4358 2.1775 22

25 R06A E07 Cetirizine 0.3330 1.9108 2.2438 0.2259 1.2548 1.4807 32

26 R01B A52 Pseudoephedrine, combinations 0.4270 1.8116 2.2387 0.4124 1.1180 1.5304 29

27 C10A A05 Atorvastatin 0.8415 1.2801 2.1216 0.3930 1.2690 1.6620 27

28 C08C A02 Felodipine 1.5870 0.4541 2.0411 1.3805 0.4422 1.8227 24

29 C01E B15 Trimetazidine 1.1144 0.7084 1.8229 0.6345 0.8040 1.4386 33

30 A02B A02 Ranitidine 1.1472 0.6463 1.7936 1.1741 0.5389 1.7130 26

31 A02B C01 Omeprazole 0.8518 0.9395 1.7913 0.5889 0.9104 1.4994 30

32 R03D A04 Theophylline 1.0632 0.4774 1.5407 1.1004 0.4886 1.5890 28

33 M04A A01 Allopurinol 1.0825 0.4317 1.5142 0.9627 0.3601 1.3227 37

34 A10A D01Insulins and analogues, intermediate-acting combined with fast-acting (human)

1.2479 0.1608 1.4087 1.1299 0.1982 1.3281 36

35 C01D A08 Isosorbide dinitrate 1.2206 0.0991 1.3197 1.2768 0.0932 1.3699 34

36 C03E A01Hydrochloro-thiazide and potassium-sparing agents

0.8510 0.4501 1.3011 1.0077 0.3358 1.3434 35

37 C09C A01 Losartan 0.6054 0.6540 1.2595 0.5202 0.5978 1.1179 39

38 R03B A02 Budesonide 1.0263 0.1722 1.1984 1.5698 0.2171 1.7870 25

39 G03A A09 Desogestrel and oestrogen 0.4085 0.7718 1.1802 0.3506 0.5492 0.8998 49

40 R03C C02 Salbutamol 0.6723 0.5031 1.1754 0.6610 0.4139 1.0749 41

CHAPTER 1 | USE OF MEDICINES IN MALAYSIA

8

MALAYSIAN STATISTICS ON MEDICINES 2007

9

Table 1.6 : Comparison of Top 10 Drugs by Utilisation in DDD/1000 population/day 2007 Malaysia, Australia and Norway

RankMalaysia Australia Norway

ATC Drug Use ATC Drug Use ATC Drug Use

1 A10B A02 Metformin 14.28 C10AA05 Atorvastatin 128.90 C10AA01 Simvastatin 109.66

2 A10B B01 Glibenclamide 12.76 C10AA01 Simvastatin 53.94 B01AC06 Acetyl-salicylic acid 66.98

3 C07A B03 Atenolol 12.66 C09AA05 Ramipril 40.69 C10AA05 Atorvastatin 48.46

4 C07A B02 Metoprolol 12.08 C09A A04 Perindopril 28.32 N05CF01 Zopiclone 32.32

5 C08C A05 Nifedipine 11.46 C09CA04 Irbesartan 23.61 C08CA01 Amlodipine 30.76

6 C08C A01 Amlodipine 8.93R03AC02, R03CC02

Salbutamol 22.80 R06AE07 Cetirizine 29.76

7 C09A A04 Perindopril 7.96 N06AB06 Sertraline 20.12 C09AA05 Ramipril 24.82

8 A10B B09 Gliclazide 7.16 B01AC06 Acetyl-salicylic acid 19.57 C07AB02 Metoprolol 24.71

9 B01A C06 Acetyl-salicylic acid 6.91 C03CA01 Furosemide 19.36 H03AA01 Levothyroxine 22.02

10 C09A A02 Enalapril 6.12 A02BC05 Esomeprazole 17.90 C03CA01 Furosemide 20.39

References:

1. WHO Collaborating Centre for Drug Statistics Methodology. Guidelines for ATC Classification and DDD Assignment 2009. Oslo December 2008

2. Institute for Public Health (IPH). The Third National Health and Morbidity Survey (NHMS III) 2006, Vol.1, Appendix 12, Table 29, p783. Ministry of Health Malaysia 2008

3. Clinical Practice Guidelines Task Force. Clinical Practice Guidelines Management of Type 2 Diabetes Mellitus (3rd Edition). Ministry of Health Malaysia 2004

4. Dahlof B, Sever PS, Poulter NR et al. Prevention of cardiovascular events with an antihypertensive regimen of amlodipine adding perindopril as required versus atenolol adding bendroflumethiazide as required, in the Anglo Scandinavian Outcomes Trial- BP lowering Arm (ASCOT-BPLA): a multicentre randomised controlled trial. Lancet 2005;366:895-906

5. Australian Government Department of Health and Ageing. Australian Statistics on Medicines 2007, 13th Edition. Commonwealth of Australia 2009

6. Norwegian Institute of Public Health. Drug Consumption in Norway 2003 – 2007. Oslo 2008

7. Australian Bureau of Statistics 4820.0.55.001 - Diabetes in Australia: A Snapshot, 2004-05. Latest ISSUE Released at 11:30 AM (CANBERRA TIME) 22/08/2006.

8. IDF, International Diabetes Federation. Diabetes Atlas Third Edition. Brussels: IDF, 2006b. http://www.euphix.org/object_document/o4858n27165.html

9. National Essential Drug List (NEDL) 2nd Edition (September 2008)

http://www.pharmacy.gov.my [Accessed on 3rd September 2010]

10. Institute for Public Health (IPH). The Third National Health and Morbidity Survey (NHMS III) 2006, Vol.1, Topic 4, p302. Ministry of Health Malaysia 2008.

CHAPTER 1 | USE OF MEDICINES IN MALAYSIA